3SIU

Structure of a hPrp31-15.5K-U4atac 5' stem loop complex, monomeric form

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D	NHP2-like protein 1	polymer	130	14335.7	2	UniProt (P55769) Pfam (PF01248) In PDB	Homo sapiens (human)	U4/U6.U5 tri-snRNP 15.5 kDa protein, High mobility group-like nuclear protein 2 homolog 1, OTK27, SNU13 homolog, hSNU13
2	B, E	U4/U6 small nuclear ribonucleoprotein Prp31	polymer	254	28268.2	2	UniProt (Q8WWY3) Pfam (PF01798) In PDB	Homo sapiens (human)	Pre-mRNA-processing factor 31, Serologically defined breast cancer antigen NY-BR-99, U4/U6 snRNP 61 kDa protein, Protein 61K, hPrp31
3	C, F	U4atac snRNA	polymer	28	9073.5	2	GenBank (NR_023343.1)	Homo sapiens	U4atac small nuclear RNA (U12-dependent splicing), RNU4ATAC
4	B, D	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
5		water	water		18.0	57	Chemie (HOH)

Sequence modifications

A, D: 1 - 128 (UniProt: P55769)

PDB	External Database	Details
Gly -1	-	expression tag
Ser 0	-	expression tag

B, E: 85 - 333 (UniProt: Q8WWY3)

PDB	External Database	Details
Gly 80	-	expression tag
Pro 81	-	expression tag
Leu 82	-	expression tag
Gly 83	-	expression tag
Ser 84	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	103354.7
Non-Polymers*	Number of molecules	2
	Total formula weight	192.1
All*	Total formula weight	103546.8

*Water molecules are not included.